Free magnetohydrodynamic shear layers in the presence of rotation and magnetic field

E. J. Spence; A. H. Roach; E. M. Edlund; P. Sloboda; H. Ji

doi:10.1063/1.3702006

Free magnetohydrodynamic shear layers in the presence of rotation and magnetic field

E. J. Spence, A. H. Roach, E. M. Edlund, P. Sloboda, H. Ji

Astrophysical Sciences

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11 Scopus citations

Abstract

We present an experimental and numerical study of hydrodynamic and magnetohydrodynamic free shear layers and their stability. We first examine the experimental measurement of globally unstable hydrodynamic shear layers in the presence of rotation and their range of instability. These are compared to numerical simulations, which are used to explain the modification of the shear layer, and thus the critical Rossby number for stability. Magnetic fields are then applied to these scenarios and globally unstable magnetohydrodynamic shear layers generated. These too are compared to numerical simulations showing behavior consistent with the hydrodynamic case and previously reported measurements.

Original language	English (US)
Article number	056502
Journal	Physics of Plasmas
Volume	19
Issue number	5
DOIs	https://doi.org/10.1063/1.3702006
State	Published - May 2012

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.3702006

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@article{ffca14f95cb546eb9c39fad268e862b0,

title = "Free magnetohydrodynamic shear layers in the presence of rotation and magnetic field",

abstract = "We present an experimental and numerical study of hydrodynamic and magnetohydrodynamic free shear layers and their stability. We first examine the experimental measurement of globally unstable hydrodynamic shear layers in the presence of rotation and their range of instability. These are compared to numerical simulations, which are used to explain the modification of the shear layer, and thus the critical Rossby number for stability. Magnetic fields are then applied to these scenarios and globally unstable magnetohydrodynamic shear layers generated. These too are compared to numerical simulations showing behavior consistent with the hydrodynamic case and previously reported measurements.",

author = "Spence, {E. J.} and Roach, {A. H.} and Edlund, {E. M.} and P. Sloboda and H. Ji",

note = "Funding Information: The authors gratefully thank C. Gissinger for useful discussions about these results. This work has been supported by the U.S. Department of Energy{\textquoteright}s Office of Sciences - Fusion Energy Sciences Program through contract number DE-AC02-09CH11466, the U.S. National Science Foundation under grant numbers AST-0607472 and PHY-0821899, and the U.S. National Aeronautics and Space Administration (NASA) under grant numbers APRA08-0066 and ATP06-35.",

year = "2012",

month = may,

doi = "10.1063/1.3702006",

language = "English (US)",

volume = "19",

journal = "Physics of Plasmas",

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T1 - Free magnetohydrodynamic shear layers in the presence of rotation and magnetic field

AU - Spence, E. J.

AU - Roach, A. H.

AU - Edlund, E. M.

AU - Sloboda, P.

AU - Ji, H.

N1 - Funding Information: The authors gratefully thank C. Gissinger for useful discussions about these results. This work has been supported by the U.S. Department of Energy’s Office of Sciences - Fusion Energy Sciences Program through contract number DE-AC02-09CH11466, the U.S. National Science Foundation under grant numbers AST-0607472 and PHY-0821899, and the U.S. National Aeronautics and Space Administration (NASA) under grant numbers APRA08-0066 and ATP06-35.

PY - 2012/5

Y1 - 2012/5

N2 - We present an experimental and numerical study of hydrodynamic and magnetohydrodynamic free shear layers and their stability. We first examine the experimental measurement of globally unstable hydrodynamic shear layers in the presence of rotation and their range of instability. These are compared to numerical simulations, which are used to explain the modification of the shear layer, and thus the critical Rossby number for stability. Magnetic fields are then applied to these scenarios and globally unstable magnetohydrodynamic shear layers generated. These too are compared to numerical simulations showing behavior consistent with the hydrodynamic case and previously reported measurements.

AB - We present an experimental and numerical study of hydrodynamic and magnetohydrodynamic free shear layers and their stability. We first examine the experimental measurement of globally unstable hydrodynamic shear layers in the presence of rotation and their range of instability. These are compared to numerical simulations, which are used to explain the modification of the shear layer, and thus the critical Rossby number for stability. Magnetic fields are then applied to these scenarios and globally unstable magnetohydrodynamic shear layers generated. These too are compared to numerical simulations showing behavior consistent with the hydrodynamic case and previously reported measurements.

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ER -

Free magnetohydrodynamic shear layers in the presence of rotation and magnetic field

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